Why in an android application the reception of the data is slow after is receivi

Why in an android application the reception of the data is slow after is receivingndata from an arduino Uno?

I am sending data that I get from a medical device with the help of an ehealth card and a Bluetooth module wt12 to an android application that is in charge of receiving, the data is sent with a delay of 1ms, the application begins receiving the data well but passing Only about ten seconds this begins to be slow and ends up no longer receiving any data.

Why is this happening?
This is my code…

#include <eHealth.h>

// The setup routine runs once when you press reset:
void setup() {
  Serial.begin(115200);
}

// The loop routine runs over and over again forever:
void loop() {

  float ECG = eHealth.getECG();

  Serial.print("ECG value :  ");
  Serial.print(ECG, 2);
  Serial.print(" V");
  Serial.println("");

  delay(1);	// wait for a millisecond
}

What is the receiving application expecting as an end of message marker ?

Evilword666:
Why in an android application the reception of the data is slow after is receivingndata from an arduino Uno?

Sounds like an issue in your Android application rather than the Arduino. I notice you haven’t posted the code for that.